Seasonal Financing	6 Months Ended
Jun. 30, 2017
Debt Disclosure [Abstract]
Seasonal Financing	Seasonal Financing Mattel maintains and periodically amends or replaces its domestic unsecured committed revolving credit facility (“Credit Facility”) with a commercial bank group. The Credit Facility is used as a back-up to Mattel’s commercial paper program, which is used as Mattel's primary short-term borrowing facility. The agreement governing the Credit Facility was amended on June 15, 2017 to, among other things, increase the maximum allowed consolidated debt-to-consolidated earnings before interest, taxes, depreciation, and amortization ratio that Mattel is required to maintain under the Credit Facility to 3.75 to 1 from 3.50 to 1 for the four consecutive quarters beginning with the second quarter of 2017. The aggregate commitments under the Credit Facility remain at $1.60 billion, with an “accordion feature,” which allows Mattel to increase the aggregate availability under the Credit Facility to $1.85 billion under certain circumstances. In addition, applicable interest rate margins remain within a range of 0.00% to 0.75% above the applicable base rate for base rate loans and 0.88% to 1.75% above the applicable LIBOR for Eurodollar rate loans, and the commitment fees range from 0.08% to 0.25% of the unused commitments under the Credit Facility, in each case depending on Mattel’s senior unsecured long-term debt rating. Both the borrowing costs incurred as a result of the amendment and the portion of unamortized debt issuance costs from the prior facility renewal related to creditors involved in both the prior facility and amended facility were deferred, and such costs will be amortized over the term of the amended Credit Facility. Mattel is required to meet financial ratio covenants at the end of each quarter and fiscal year, using the formulae specified in the credit agreement to calculate the ratios. Mattel was in compliance with such covenants at June 30, 2017. The agreement governing the Credit Facility is a material agreement, and failure to comply with the financial ratio covenants may result in an event of default under the terms of the Credit Facility. If Mattel were to default under the terms of the Credit Facility, its ability to meet its seasonal financing requirements could be adversely affected.

Seasonal Financing

Mattel maintains and periodically amends or replaces its domestic unsecured committed revolving credit facility (“Credit Facility”) with a commercial bank group. The Credit Facility is used as a back-up to Mattel’s commercial paper program, which is used as Mattel's primary short-term borrowing facility. The agreement governing the Credit Facility was amended on June 15, 2017 to, among other things, increase the maximum allowed consolidated debt-to-consolidated earnings before interest, taxes, depreciation, and amortization ratio that Mattel is required to maintain under the Credit Facility to 3.75 to 1 from 3.50 to 1 for the four consecutive quarters beginning with the second quarter of 2017. The aggregate commitments under the Credit Facility remain at $1.60 billion, with an “accordion feature,” which allows Mattel to increase the aggregate availability under the Credit Facility to $1.85 billion under certain circumstances. In addition, applicable interest rate margins remain within a range of 0.00% to 0.75% above the applicable base rate for base rate loans and 0.88% to 1.75% above the applicable LIBOR for Eurodollar rate loans, and the commitment fees range from 0.08% to 0.25% of the unused commitments under the Credit Facility, in each case depending on Mattel’s senior unsecured long-term debt rating.

Both the borrowing costs incurred as a result of the amendment and the portion of unamortized debt issuance costs from the prior facility renewal related to creditors involved in both the prior facility and amended facility were deferred, and such costs will be amortized over the term of the amended Credit Facility.

Mattel is required to meet financial ratio covenants at the end of each quarter and fiscal year, using the formulae specified in the credit agreement to calculate the ratios. Mattel was in compliance with such covenants at June 30, 2017.

The agreement governing the Credit Facility is a material agreement, and failure to comply with the financial ratio covenants may result in an event of default under the terms of the Credit Facility. If Mattel were to default under the terms of the Credit Facility, its ability to meet its seasonal financing requirements could be adversely affected.